Question

11.- She is very good at playing the piano because she practises everyday. 12.- I won't win the lottery, so I'll carry on working. 13.- I can't play basketball because I'm ill. 14.- We haven't much time, so we can't wait for him. 15.- Oh dear! I've got them all wrong. I'll do the exercise again. 16.- It's so cold we can't go out today. 17.- You can't have the job because you aren't 18. 18.- People don't do enough exercise, so there is a lot of heart disease. 19.- Children have bad teeth because they eat too many sweets. 20.-. People eat a lot of fast food because they haven't got time to cook.​

Answer 1

Here are the sentences you provided with corrections and explanations:

11. She is very good at playing the piano because she practices every day.

• Correction: "practises" should be "practices."
• Explanation: The correct spelling is "practices" when referring to the action of practicing.

12. I won't win the lottery, so I'll carry on working.

• Correction: This sentence is correct.

13. I can't play basketball because I'm ill.

• Correction: This sentence is correct.

14. We haven't much time, so we can't wait for him.

• Correction: "haven't much time" should be "don't have much time."
• Explanation: The correct phrase is "don't have much time" to indicate a shortage of time.

15. Oh dear! I've got them all wrong. I'll do the exercise again.

• Correction: This sentence is correct.

16. It's so cold we can't go out today.

• Correction: This sentence is correct.

17. You can't have the job because you aren't 18.

• Correction: This sentence is correct.

18. People don't do enough exercise, so there is a lot of heart disease.

• Correction: This sentence is correct.

19. Children have bad teeth because they eat too many sweets.

• Correction: This sentence is correct.

20. People eat a lot of fast food because they haven't got time to cook.

• Correction: This sentence is correct.

Your sentences are mostly accurate, with just a few minor corrections as noted above.